Ilia Denisov
bb18dc362b
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The topic info card built the profile link as `tg://user?id=`, which clients render as dead text for a user they don't already know (the test-vs-prod difference an operator saw), and it put the raw display name through HTML — so a name starting with "/" was auto-detected as a tappable bot command that fired when tapped. Render the card with message entities instead: the display name is covered by a `text_mention` entity (the reliable way to mention a username-less user the bot has already seen — it messaged the bot), which links the profile AND, because the name sits inside an entity, suppresses the "/command" and "@mention" auto-detection on it. Drop the HTML parse mode and the tg:// link. Entity offsets are UTF-16.